function Get-Password {
<#
 .Parameter Complexity
 The parameter specifies the character sets used to generate the password, where:
  'L' is lowerCase
  'N' is numbers
  'S' is symbols
  'U' is upperCase
#>
[CmdletBinding()]
param (
 [Int]$Size = 8,
 [Char[]]$Complexity = "LNSU",
 [Char[]]$Exclude
)
$Result = @();
$Tokens = @();
$Series = @{
 LowerCase = [Char[]]'abcdefghijklmnopqrstuvwxyz'
 Numbers   = [Char[]]'0123456789'
 Symbols   = [Char[]]'!@#$%^&*()_+'
 UpperCase = [Char[]]'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
}
foreach ( $Token in $Series.Keys | Where-Object { $Complexity -Contains $_[0] }) {
 $Choice = $Series.$Token | Where-Object { $Exclude -cNotContains $_ }
 $Result += $Choice | Get-Random
 $Tokens += $Choice
}
while ( $Result.Count -lt $Size ) { $Result += $Tokens | Get-Random }
return ( $Result | Sort-Object { Get-Random }) -Join ""
}